Method SSL.Cipher.KeyExchange()->receive_key_share_offer()
- Method receive_key_share_offer
 optionalstring(8bit)receive_key_share_offer(string(8bit)offer)- Description
 TLS 1.3 and later.
Receive a key share offer key exchange for the configured group (currently only implemented in
KeyShareECDHEandKeyShareDHE).- Note
 Clears the secret state.
- Returns
 Returns the shared pre-master key.